Plastisol.

PVC-based screen ink that sits on the fabric as a cured film rather than soaking in, and needs heat to cure rather than air-drying. It is what most people mean by screen printing on a production floor, as distinct from water-based or discharge inks that go into the fiber. It will not dry in the screen mid-run the way water-based ink can, and that same surface film is what gives a plastisol print its heavier hand feel.